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Question 1, in the inspection report of eight metals refers to which of eight metals?

Answer:

eight metals are: aluminum, antimony, mercury, cadmium, arsenic, barium, chromium, selenium

Question2, clothes accidentally touches the neutral pen ink how clean?

Answer :

One, just got laundry detergent scrub immediately with dyed parts, and then rinse with water;

In two, with a small amount of gasoline wipe dyed parts and then rinse with water (not applicable to all cloth);

In three, with a little light potassium permanganate water around 2% rub, then rinse with water;

Four, use white vinegar to clean contaminated sites, and then rinse with water;

Five, using the toothpaste on the contaminated parts repeatedly rub, then rinse with water;

Six, such as the silk is expected, will stain the tiled on clean paper, coated with dry cleaning or rubbing alcohol, silk stains on the back, until the stains disappear, and then rinse with water;

Question 3, currently on the market neutral pen pipe and outer diameter which specification?

Anwser:

first ,Tubing theory as follows:( unit: mm )

φ1.8 φ2.0 φ2.2 φ2.45 φ2.65 φ2.75 φ2.8 φ2.85 φ2.96 

φ3.3 φ3.4 φ3.5 φ3.6  φ4.0  φ4.2  φ4.4 φ4.8  φ5.0  φ5.5


Second, tubing foreign are as follows: (the unit mm)

φ3.5 φ3.8 φ4.0 φ4.2 φ4.3 φ4.35  φ4.4 φ4.45 

φ4.6 φ4.8 φ5.5 φ6.0 φ6.5 φ7.0   φ7.5 

 

Question 4,Written material currently have?

Anwser:

Currently on the market neutral pen breed more.
According to the written to points, stainless steel, nickel cupronickel, lead brass, etc.;
According to the ball bead material differs character, can be divided into tungsten carbide ball beads, modification, ceramic ball bead, etc.;
Written by different structure, and for the bullet, hoist, needle head top.

 

Question 5,Neutral pen head steel ball diameter has what specifications?

Anwser:

The bullet: 0.5mm        0.55mm     0.6mm       0.7mm      0.8mm      1.0mm      1.2mm

Half a needle tube: 0.55mm      0.5mm
The needle tube:  0.28mm      0.35mm     0.38mm      0.4mm      0.5mm

Question6,China writing instrument industry which ten regional economy?

Answer:

wenzhou            The pens are China
beifa                  China Pen City
ningbo               China Stationery capital
fenshui             Chinese Pen village
wengang           Chinese brush

lishui                 Production base in China Writing Instrument
yiwu                 China Writing Instrument Industry Base
shanghai fengxian              Chinese Pen industrial base / Chinese Pen Center
guangdong shixingxian               The Chinese system pen research and development makes the base

zhejiang qingyuanxian               Pencil production base in China

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